Please help A generator is a device that uses a changing magnetic field to produce electricity. As the coil turns within the magnetic field a current is produced in the coil. The current continues to flow through the coil as long as the coil is moving past the magnet, and its circuit is closed.
In a bicycle dynamo or generator a magnet is rotated by a friction roller when put in contact with the side of a wheel. The rotation of the magnet inside a coil fixed inside the dynamo produces electricity that glows the lamp connected to the coil.

Question 1: What are the two main parts of the generator?

Question 2: A magnet and a coil produce electricity under two conditions. Give these two conditions.

Question 3: What is the cause of rotation of the magnet inside the dynamo of a bicycle.

Question 4: A coil is moved close to a magnet then is stopped. Will a current be induced in it in both cases?

Please help me answer i didnt understand the hw ;-;​